Tolong dijawab yha sama caranya

Q1 = massa . kalor jenis . kenaikan suhu
= 1 kg . 2.100 J/kg°C . 10°C
= 1 . 2.100 J . 10
= 21.000 J
Q2= massa . kalor lebur
= 1 kg . 336.000 J/kg
= 1 . 336.000 J
= 336.000 J
Q3= massa . kalor jenis . kenaikan suhu
= 1 kg . 4.200 J/kg°C . 30°C
= 1 . 4.200 J . 30
= 126.000 J
B-C-D = Q2 + Q3
= 336.000 J + 126.000 J
= 336 J/kg + 126 J/kg
= 462 J/kg

Jawaban : D. 462 J/kg